Seismic data quality and sand layer Q absorption in Tarim desert area
Li He-qun11,2,5, Meng Xiao-hong1, Zhao Bo2, Luo Guo-an2,3, Xu Feng4
1. China University of Geosciences,Beijing City 100083,China;
2. BGP Inc.of CNPC,Zhuozhou City,Hebei Province 072751,China;
3. China University of Petroleum,Beijing City 102249,China;
4. Southwest University of Petroleum,Chengdu City,Sichuan Province 610500,China
Abstract：Based on the seismic data in Tarim desert area,the sand layer Q absorption survey data and the Q absorption theory modeling,the main reason which causes correlation between seismic data Quality and terrain,how Q absorption affects seismic data,the sand layer Q value estimation,Q absorption compensation and other Questions were thoroughly analyzed in this paper.The analysis results show that sand layer Q absorption is not the main reason to cause correlation between seismic data Quality and the terrain,the current-used Q value estimation method faces strong interference in estimating Q value,however the Q absorption compensation,to a certain extent,only can decrease the difference of seismic data quality which is terrain correlated.
